* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
    background: #ffffff;
    min-height: 100vh;
    padding: 10px;
    display: flex;
    justify-content: center;
}

.container {
    width: 50%;
    max-width: 50%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section {
    width: 100%;
    max-width: 100%;
    text-align: center;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 10px;
    background-color: #fffbf0;
}

.section-img {
    width: 100%;
    max-width: 90%;
    height: auto;
    border-radius: 12px;
    margin-bottom: 20px;
}

.section-text h1,
.section-text h2 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 15px;
    font-weight: bold;
}

.section-text p {
    font-size: 1.4rem;
    color: #444;
    margin-bottom: 10px;
    line-height: 1.6;
    font-weight: bold;
}

.main-title {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 30px;
    line-height: 1.4;
    font-weight: bold;
}

.line-section h2 {
    font-size: 1.4rem;
    color: #00B900;
    margin-bottom: 25px;
    font-weight: bold;
}

.description {
    margin-bottom: 30px;
}

.highlight {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 600;
}

.benefit {
    margin-bottom: 35px;
}

.benefit p {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.6;
}

.kybtn {
    width: 100%;
    background: linear-gradient(45deg, #00B900, #00D900);
    color: white;
    border: none;
    padding: 20px;
    font-size: 1.4rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 185, 0, 0.3);
    animation: pulse 1.5s infinite;
    margin-top: 15px;
}

.kybtn:hover {
    transform: scale(1.3);
    box-shadow: 0 8px 25px rgba(0, 185, 0, 0.4);
}

.kybtn:active {
    transform: scale(0.95);
}

.button-section {
    width: 100%;
    padding: 20px 10px;
    background-color: #fffbf0;
}

.cta-button {
    width: 100%;
    background: linear-gradient(45deg, #00B900, #00D900);
    color: white;
    border: none;
    padding: 20px;
    font-size: 1.4rem;
    border-radius: 12px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 185, 0, 0.3);
    animation: pulse 1.5s infinite;
}

.cta-button:hover {
    transform: scale(1.3);
    box-shadow: 0 8px 25px rgba(0, 185, 0, 0.4);
}

.cta-button:active {
    transform: scale(0.95);
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .container {
        width: 90%;
        max-width: 90%;
    }
    .section {
        max-width: 100%;
        padding: 15px 5px;
    }
    .section-img {
        max-width: 95%;
    }
    .section-text h1,
    .section-text h2 {
        font-size: 1.6rem;
    }
    .section-text p {
        font-size: 1.3rem;
    }
    .kybtn {
        font-size: 1.3rem;
        padding: 18px;
    }
    .cta-button {
        font-size: 1.3rem;
        padding: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        width: 95%;
        max-width: 95%;
    }
    .section {
        padding: 10px 3px;
    }
    .section-img {
        max-width: 98%;
    }
    .section-text h1,
    .section-text h2 {
        font-size: 1.4rem;
    }
    .section-text p {
        font-size: 1.2rem;
    }
    .kybtn {
        font-size: 1.2rem;
        padding: 16px;
    }
    .cta-button {
        font-size: 1.2rem;
        padding: 16px;
    }
}